Fluid-pressure regulator.



L. P. LOWE.

FLUID PRESSURE REGULATOR. APPLICATION man APR.29, 1914 Patented Oct. 10, 1916.

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WITNESSES ETE LEON P. LOWE, OF SAN FRANCISCO, CALIFORNIA.

FLUID-PRESSURE BEGULATGB.

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Specification of Letters Patent.

Patented Oct. 10,1916.

Application filed April 29, 1914. Serial No. 835,162.

To all whom it may concern:

Be it known that I, LEON P. Lown, a citizen of the United States, residing at San Francisco, in the county of San Francisco and State of California, have invented new and useful Improvements in Fluid-Pressure Regulators, of which the following is a specification.

This invention relates to improvements in fluid pressure regulators, and especially those used for regulating the pressure of gas. Such regulators are apt to become defective in operation by reason of the surfaces of the valve which controls the passage of the fluid into the regulator and of the seat for said valve becoming uneven through the deposit thereon of carbonaceous or other foreign substance, so that the valve does not fit tightly on the seat. l/Vhen such is the case it is necessary to clean or renew the seat and valve, and the operation of removing and cleaning them entails a considerable amount of time and labor.

It is the object of the present invention to provide a fluid pressure regulator in which the valve and its seat can be easily removed in a single operation without disconnecting the main body of the regulator from its pipe connections.

A further object is to providea seat and valve and regulator in general, of simple construction and having a simple yet movable connection between the valve and seat.

In the accompanying drawing, Figure 1 is a central sectional view of my improved fluid pressure regulator; Fig. 2 is a horizon tal section thereof; Fig. 3 is a detail side view of a modification.

Referring to the drawing, 1 indicates a cylindrical box-like casing having a flange 2. vand 3 indicates a cover therefor having a flange 4. Between the flanges 2 and 4 is secured by bolts the marginal portion of a circular diaphragm 5, to the center of which is secured by a screw 6 a weight 7, the lower central portion of which is pivotally attached to the upper end of short links 8, the lower ends of which links are pivotally attached to the inner end of a lever 9, fulcrumed at 10 upon. standards 11 secured upon the bottom of the regulator casing 1. Said lever is extended beyond said fulcrum to form a short arm 12.

13 indicates the inlet opening for the fluid and 1 1 the outlet opening. To said casing 1 a fitting 15 is secured by screws 16 passing through ears 17 and screwed into the casing. The fitting 15 has a cylindrical extension 18 through said inlet opening and of less diameter than said opening, and the conduit 19 through said fitting is continued through sald extension in a conical or convergent form, so as to form at the inner end of said extension a comparatively small opening 20 1nto said regulator. Surrounding said extension is a helical spring 21 secured at its outer end to said extension and projecting beyond its inner end. To the inner end of said helical spring is secured a metal disk 22 on which is cemented a leather facing 23 within the spring. The inner end 24 of said extension is slightly raised in the center, or conical, so as to form around the opening 20 a narrow edge against which said facing can be pressed. The parts are so arranged that a corner 25 of the short arm 12 of said lever 9 can bear against the central portion of the back of said metal disk 22.

lVhen the fluid pressure in the regulator rises, the diaphragm raises the weight 7, causing the end 25 of the short arm of said lever to press the metal disk 22 outward toward the seat 241 against the pressure of .the helical spring 21. When the fluid pressure becomes sufliciently high the facing 23 of the metal dish, pressing against the seat 24 of the extension, shuts ofl the supply of fluid. Qonversely, when the fluid pressure falls, the end of the short arm is withdrawn and the compressed spring 21 expands, moving the valve facing from its seat, so that fluid is allowed to flow into the regulator.

It will thus be seen that my improved valve and valve seat are of very simple construction and are connected together, so that they may be removed as if of one piece, whereby the time and labor of cleaning or renewing the valve and valve seat are greatly reduced.

In the modification of the invention shown in Fig. 3, there extend from the disk 22 fingers 26 which can slide loose in grooves 27 in the outer surface of the extension 18. However, the spring 21 is the preferred form of the invention.

I claim 1. A fluid pressure regulator comprising a casing having an inlet opening, a pipe fitting secured to the outside of the casing and having a tubular extension through, and of less diameter than, said inlet opening, the inner end of said extension forming a valve seat, a circular valve on said seat,

and a helical spring of less diameter than said opening, surrounding, and secured at its outer end to, said extension, and surrounding, and secured at its inner end to, said valve.

' 2. A fluid pressure regulator comprising a casing having an inletopening, a pipe fitting secured to the outside of the casing and having a tubular extension through said opening into the interior of said casing, the inner end of said extension forming a valve seat, a circular valve on said seat, and means secured to said valve and engaging the outer surface of saidextension for guiding said 1:; valve relatively to said extension.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

L. P. LOWE.

Vitnesses:

F. M. WRIGHT, D. B. RICHARDS.

; Copies of this patent may beobtained for five cents each,.by addressing the Commissioner of Patents. 1 Washington,D. 0. 

